AirHint found the following cheapest return flights from London (LHR) to Mexico City (MEX) in March 2026 (see full year).

Return flights

04 Mar - 18 Mar	Lufthansa
07 Mar - 18 Mar	Lufthansa
06 Mar - 21 Mar	Lufthansa
09 Mar - 16 Mar	British Airways
05 Mar - 12 Mar	Virgin Atlantic
02 Mar - 16 Mar	Virgin Atlantic
02 Mar - 19 Mar	Virgin Atlantic
01 Mar - 31 Mar	Air Canada
16 Mar - 28 Mar	Air Canada
07 Mar - 16 Mar	Air Canada
18 Mar - 02 Apr	United
24 Mar - 14 Apr	Air Canada
19 Mar - 09 Apr	Iberia
25 Mar - 14 Apr	United
20 Mar - 03 Apr	United
26 Mar - 14 Apr	SWISS
15 Mar - 04 Apr	Iberia
26 Mar - 01 Apr	TAP
21 Mar - 04 Apr	Lufthansa
20 Mar - 04 Apr	Lufthansa

Also check the deals for one-way flights from London to Mexico City in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Mexico City in March from $735

Return flights